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BD3570YFP-M Datasheet(PDF) 10 Page - Rohm |
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BD3570YFP-M Datasheet(HTML) 10 Page - Rohm |
10 / 20 page Datasheet Datasheet 10/17 TSZ02201-0T2T0AN00160-1-2 © 2013 ROHM Co., Ltd. All rights reserved. 19.Sep.2013 Rev.002 www.rohm.com TSZ22111 • 15 • 001 BD357xYFP-M BD357xYHFP-M Series Calculation Example Example: BD3571YFP-M VCC = 12 V and VO = 5 V at Ta = 85 °C 0.624 12 12 5 89 30μA Where: ICC is the total supply current. Make a thermal calculation considering the above situation so that the whole operating temperature range will be within the power dissipation capacity of the IC. The power consumption (Pc) of the IC in the event of shorting (i.e., if the VO and GND pins are shorted) will be obtained from the following equation. Where: Ishort is the short current. Peripheral Settings for Pins and Precautions 1. VCC pin Insert capacitors with a capacitance from 0.33 µF to 1000 µF between the VCC and GND pins. The capacitance varies with the application. Be sure to design the capacitance with a sufficient margin. 2. Capacitors for stopping oscillation on output pins Capacitors for stopping oscillations must be placed between each output pin and the GND pin. Use a capacitor within the capacitance range of 0.1 µF and 1000 µF. Since oscillations do not occur even for ESR values from 0.001 Ω to 100 Ω, a ceramic capacitor can be used. Abrupt input voltage and load fluctuations can affect output voltages. Output capacitor capacitance values should be determined after sufficient testing of the actual application. θja = 104.2 °C / W → -9.6 mW / °C 25 °C = 1.2 W → 85 °C = 0.624 W |
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